Flushing method, consumable and device for ventricular assist system and medical catheter pump system

Abstract

The invention discloses a ventricular assist system, a flushing method of a medical catheter pump system, consumables and a device, and belongs to the technical field of medical equipment. The ventricular assist system comprises a flushing pump assembly (210), a first three-way valve (220), a second three-way valve (230) and a medical catheter pump (240), a first valve port (221) of the first three-way valve (220) is connected to a first flushing passage driven by the flushing pump assembly (210), and a second valve port (222) of the first three-way valve (220) is connected to a first flushing interface of the medical catheter pump (240); a first valve port (231) of the second three-way valve (230) is connected to a second flushing passage driven by the flushing pump assembly (210), and a second valve port (232) of the second three-way valve (230) is connected to a second flushing interface of the medical catheter pump (240).

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical equipment technology, and in particular to a flushing method, consumables, and device for a ventricular assist system and a medical catheter pump system. Background Art

[0002] A medical catheter pump is a medical device used to assist the heart in providing blood circulation power. When working, the catheter of the medical catheter pump is sent to the left ventricle through the femoral artery. The inlet is located in the left ventricular outflow tract, and the outlet is located in the aorta. When the axial flow pump is running, it can suck blood out from the inlet at the left ventricle end, and then return it to the aorta through the outlet at the aorta end, thus achieving the effect of heart assistance.

[0003] Before using the medical catheter pump, the air in the medical catheter pump needs to be emptied. In the related art, the flushing pump is controlled to continuously fill the flushing liquid into the medical catheter pump through the flushing catheter, and the flushing liquid squeezes the air, thereby removing the bubbles in the medical catheter pump.

[0004] However, since the flushing catheter has a long pipeline, it is difficult to completely remove the air in the entire catheter pump system by flushing the flushing catheter and the medical catheter pump as a whole, and bubbles are likely to remain. Summary of the invention

[0005] The present application provides a flushing method, consumables and device for a ventricular assist system and a medical catheter pump system. By switching the conduction state of a first three-way valve and a second three-way valve, different flushing positions in the ventricular assist system can be flushed or pre-filled respectively. The technical solution is as follows:

[0006] According to one aspect of the present application, a ventricular assist system is provided, the ventricular assist system comprising:

[0007] A flushing pump assembly, a first three-way valve, a second three-way valve and a medical catheter pump;

[0008] The first valve port of the first three-way valve is connected to the first flushing passage driven by the flushing pump assembly, and the second valve port of the first three-way valve is connected to the first flushing interface of the medical catheter pump;

[0009] The first valve port of the second three-way valve is connected to the second flushing passage driven by the flushing pump assembly, and the second valve port of the second three-way valve is connected to the second flushing interface of the medical catheter pump.

[0010] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing position includes the first flushing passage and the second flushing passage, or the flushing position includes the inner cavity of the medical catheter pump.

[0011] In one embodiment, in the first pre-filling stage, the second valve port and the third valve port of the first three-way valve are connected, the second valve port and the third valve port of the second three-way valve are connected, and the third valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing component;

[0012] The first pre-filling stage includes a stage of filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing component.

[0013] In one embodiment, the flushing assembly includes at least one of a syringe pump, a syringe, a needle and a pressurized fluid bag.

[0014] In one embodiment, in the second pre-charging stage, the first valve port and the third valve port of the first three-way valve are connected, and the first valve port and the third valve port of the second three-way valve are connected;

[0015] The second pre-filling stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly.

[0016] In one embodiment, in the pre-filling stage, any two valve ports of the first three-way valve are connected, the second valve port and the third valve port of the second three-way valve are connected, and the third valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing component;

[0017] The priming stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly, and a stage of filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing assembly.

[0018] In one embodiment, in the pre-filling stage, the second valve port and the third valve port of the first three-way valve are connected, the second valve port and the third valve port of the second three-way valve are connected, and the third valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing component;

[0019] The priming stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly, and a stage of filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing assembly.

[0020] In one embodiment, during the overall flushing stage, the first valve port and the second valve port of the first three-way valve are connected, and the first valve port and the second valve port of the second three-way valve are connected;

[0021] The overall flushing stage includes a stage of flushing the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly.

[0022] In one embodiment, the flushing assembly includes a quick flushing assembly; the instantaneous flow rate of the flushing liquid provided by the quick flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly.

[0023] In one embodiment, the quick flushing assembly includes a pressurizing device; the instantaneous flow rate of the flushing liquid provided by the pressurizing device is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly.

[0024] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, wherein the flushing pump is used to deliver flushing fluid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage, and the circulation pump is used to control the flushing fluid to circulate and flush the inner cavity of the medical catheter pump during the overall flushing stage.

[0025] In one embodiment, the flushing pump is disposed in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is disposed in a passage of the second flushing passage that is not shared with the first flushing passage.

[0026] In one embodiment, the system further comprises a control device; the control device is used to control a pumping flow rate corresponding to the flushing pump assembly.

[0027] According to another aspect of the present application, a flushing method for a medical catheter pump system is provided, the medical catheter pump system comprising a medical catheter pump and a flushing pipeline, a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path;

[0028] The method comprises:

[0029] In the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve;

[0030] During the overall flushing stage, the flushing pump assembly flushes the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

[0031] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing position includes the first flushing passage and the second flushing passage, or the flushing position includes the inner cavity of the medical catheter pump.

[0032] In one embodiment, in the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve, including:

[0033] In the first pre-filling stage, the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing component connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve;

[0034] In the second priming stage, the first flushing passage and the second flushing passage are filled with the flushing fluid by the flushing pump assembly.

[0035] In one embodiment, the method further comprises:

[0036] In the first pre-charging stage, the second valve port and the third valve port of the first three-way valve are controlled to be connected; and the second valve port and the third valve port of the second three-way valve are controlled to be connected.

[0037] In one embodiment, the method further comprises:

[0038] In the second pre-charging stage, the first valve port and the third valve port of the first three-way valve are controlled to be connected; and the first valve port and the third valve port of the second three-way valve are controlled to be connected.

[0039] In one embodiment, in the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve, including:

[0040] During the pre-filling stage, the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing component connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve; at the same time, the first flushing passage and the second flushing passage are filled with the flushing liquid through the flushing pump component.

[0041] In one embodiment, the method further comprises:

[0042] In the pre-charging stage, any two valve ports of the first three-way valve are controlled to be connected, and the second valve port and the third valve port of the second three-way valve are controlled to be connected.

[0043] In one embodiment, the method further comprises:

[0044] In the pre-charging stage, the second valve port and the third valve port of the first three-way valve are controlled to be connected, and the second valve port and the third valve port of the second three-way valve are controlled to be connected.

[0045] In one embodiment, the method further comprises:

[0046] In the pre-charging stage, any two valve ports of the second three-way valve are controlled to be connected, and the second valve port and the third valve port of the first three-way valve are controlled to be connected.

[0047] In one embodiment, the flushing assembly includes a quick flushing assembly; the flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve fills the inner cavity of the medical catheter pump with the flushing liquid, comprising:

[0048] The inner cavity of the medical catheter pump is filled with the flushing liquid through a quick flushing component connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve, and the instantaneous flow rate of the flushing liquid provided by the quick flushing component is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump component.

[0049] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage;

[0050] The step of filling the first flushing passage and the second flushing passage with the flushing liquid by the flushing pump assembly comprises:

[0051] Controlling the rotation speeds of the flushing pump and the circulation pump so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range, the first sub-channel includes a channel on the first flushing channel that is not shared with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that is not shared with the first flushing channel;

[0052] The first flushing passage and the second flushing passage are filled with the flushing liquid by the flushing pump and the circulation pump.

[0053] In one embodiment, the method further comprises:

[0054] In the transition phase before entering the overall flushing phase, the pumping flow of the flushing pump assembly is controlled to be a second flow, which is smaller than a first flow. The first flow is the pumping flow of the flushing pump assembly in the pre-filling phase.

[0055] In one embodiment, during the transition phase, any two valve ports of the first three-way valve are connected, and the second valve port and the third valve port of the second three-way valve are connected.

[0056] In one embodiment, during the transition phase, the second valve port and the third valve port of the first three-way valve are connected, and the second valve port and the third valve port of the second three-way valve are connected.

[0057] In one embodiment, during the transition phase, any two valve ports of the second three-way valve are connected, and the second valve port and the third valve port of the first three-way valve are connected.

[0058] In one embodiment, the method further comprises:

[0059] In the transition phase, the display switches to the prompt information of the overall flushing phase;

[0060] In response to receiving a confirmation operation of the prompt information, the overall flushing stage is entered.

[0061] In one embodiment, the method further comprises:

[0062] During the overall flushing stage, the first valve port and the second valve port of the first three-way valve are controlled to be connected, and the first valve port and the second valve port of the second three-way valve are controlled to be connected.

[0063] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage;

[0064] In the overall flushing stage, flushing the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump by the flushing pump assembly includes:

[0065] During the overall flushing stage, the rotation speed of the flushing pump is controlled based on the flushing liquid flow rate of the catheter of the medical catheter pump;

[0066] and, controlling the rotation speed of the circulation pump based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump;

[0067] The circulating flushing loop and the catheter of the medical catheter pump are flushed by the flushing pump and the circulating pump.

[0068] According to another aspect of the present application, a flushing method for a medical catheter pump system is provided, the medical catheter pump system comprising a medical catheter pump and a flushing pipeline, a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path;

[0069] The method is performed by a control device corresponding to the flushing pump assembly, the control device is connected to the flushing pump assembly, and the method includes:

[0070] In the pre-filling stage, the flushing pump assembly is controlled to fill the first flushing passage and the second flushing passage with flushing liquid;

[0071] During the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

[0072] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing position includes the first flushing passage and the second flushing passage, or the flushing position includes the inner cavity of the medical catheter pump.

[0073] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage;

[0074] In the pre-filling stage, controlling the flushing pump assembly to fill the first flushing passage and the second flushing passage with the flushing liquid comprises:

[0075] In the pre-filling stage, the rotation speeds of the flushing pump and the circulation pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range, the first sub-channel includes a channel on the first flushing channel that is not shared with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that is not shared with the first flushing channel;

[0076] The first flushing passage and the second flushing passage are filled with the flushing liquid by the flushing pump and the circulation pump.

[0077] In one embodiment, the method further comprises:

[0078] In the transition phase before entering the overall flushing phase, the pumping flow of the flushing pump is controlled to be a second flow, which is smaller than a first flow. The first flow is the pumping flow of the flushing pump in the pre-filling phase.

[0079] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage;

[0080] In the overall flushing stage, controlling the flushing pump assembly to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump includes:

[0081] During the overall flushing stage, the rotation speed of the flushing pump is controlled based on the flushing liquid flow rate of the catheter of the medical catheter pump;

[0082] and, controlling the rotation speed of the circulation pump based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump;

[0083] The circulating flushing loop and the catheter of the medical catheter pump are flushed by the flushing pump and the circulating pump.

[0084] According to another aspect of the present application, a consumable for a medical catheter pump system is provided, the consumable comprising a first three-way valve and a second three-way valve;

[0085] The first valve port of the first three-way valve is used to connect to a first flushing passage driven by a flushing pump assembly, and the second valve port of the first three-way valve is used to connect to a first flushing interface of the medical catheter pump;

[0086] The first valve port of the second three-way valve is used to connect to the second flushing passage driven by the flushing pump assembly, and the second valve port of the second three-way valve is used to connect to the second flushing interface of the medical catheter pump.

[0087] In one embodiment, the consumables also include a flushing pipeline, which forms the first flushing passage and the second flushing passage, the first three-way valve is arranged at the end of the pipe opening corresponding to the first flushing passage, and the second three-way valve is arranged at the end of the pipe opening corresponding to the second flushing passage.

[0088] In one embodiment, the consumables further include the medical catheter pump, and the medical catheter pump includes:

[0089] catheter;

[0090] A drive shaft rotatably disposed in the conduit;

[0091] A pump head, comprising: a pump housing connected to the distal end of the catheter, and an impeller received in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate and pump blood;

[0092] A driving catheter handle, comprising: a rotor driven by a driving motor; the proximal end of the driving shaft is connected to the rotor, an inner cavity is formed in the driving catheter handle to rotatably support the rotor; the catheter is connected to the inner cavity, the driving catheter handle is provided with a first flushing interface and a second flushing interface connected to the inner cavity, the first three-way valve is arranged at the first flushing interface, and the second three-way valve is arranged at the second flushing interface;

[0093] Part of the flushing liquid that enters the inner cavity through the second flushing interface enters the catheter and is completely discharged into the human body at the pump head, and the other part passes through the rotor and is discharged from the first flushing interface.

[0094] According to another aspect of the present application, a control device for a medical catheter pump system is provided, the medical catheter pump system comprising a medical catheter pump and a flushing pipeline, a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path;

[0095] The device comprises:

[0096] A control module, used for filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly during the pre-filling stage, and filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve;

[0097] The control module is also used to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly during the overall flushing stage.

[0098] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing position includes the first flushing passage and the second flushing passage, or the flushing position includes the inner cavity of the medical catheter pump.

[0099] According to another aspect of the present application, a control device for a medical catheter pump system is provided, the medical catheter pump system comprising a medical catheter pump and a flushing pipeline, a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path;

[0100] The device comprises:

[0101] A control module, used for controlling the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid during the pre-filling stage;

[0102] The control module is also used to control the flushing pump assembly to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump during the overall flushing stage.

[0103] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing position includes the first flushing passage and the second flushing passage, or the flushing position includes the inner cavity of the medical catheter pump.

[0104] In one embodiment, the control device further comprises:

[0105] The flushing pump assembly comprises a flushing pump and a circulating pump;

[0106] The flushing pump is used to deliver flushing liquid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage, and the circulating pump is used to control the flushing liquid to circulate and flush the inner cavity of the medical catheter pump during the overall flushing stage.

[0107] In one embodiment, the flushing pump is disposed in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is disposed in a passage of the second flushing passage that is not shared with the first flushing passage.

[0108] According to another aspect of the present application, a computer storage medium is provided, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor to implement the flushing method of the medical catheter pump system as described above.

[0109] According to another aspect of the present application, a computer program product is provided, which includes a computer program stored in a computer-readable storage medium; the computer program is read and executed from the computer-readable storage medium by a processor of a computer device, so that the computer device executes the flushing method of the medical catheter pump system as described above.

[0110] According to another aspect of the present application, a chip is provided, the chip including a programmable logic circuit or a program, and a device equipped with the chip is used to implement the flushing method of the medical catheter pump system as described above.

[0111] The beneficial effects of the technical solution provided by this application include at least:

[0112] The first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing positions include but are not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different flushing positions in the ventricular assist system can be flushed or pre-filled respectively, and pre-filling or flushing of different flushing positions can be achieved respectively. Compared with pre-filling or flushing the entire flushing position at one time, the method of pre-filling or flushing by dividing the flushing position can allow each flushing position to be fully flushed or pre-filled, so that the gas at different flushing positions can be discharged more thoroughly, avoiding bubbles from remaining in some narrow gaps, thereby improving the exhaust effect of pre-filling or flushing the entire system as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0113] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0114] Figure 1 is a schematic diagram of an application scenario of a medical catheter pump provided by an exemplary embodiment of the present application;

[0115] Figure 2 is a schematic diagram of a ventricular assist system provided by an exemplary embodiment of the present application;

[0116] Figure 3is a schematic diagram of a ventricular assist system in a first priming stage provided by an exemplary embodiment of the present application;

[0117] Figure 4 is a schematic diagram of a ventricular assist system in a second priming stage provided by an exemplary embodiment of the present application;

[0118] Figure 5 is a schematic diagram of a ventricular assist system in an overall flushing phase provided by an exemplary embodiment of the present application;

[0119] Figure 6 is a flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application;

[0120] Figure 7 is a flow chart of a flushing method of a medical catheter pump system in the case of segmented priming provided by an exemplary embodiment of the present application;

[0121] Figure 8 is a flow chart of a flushing method of a medical catheter pump system in the case of simultaneous priming provided by an exemplary embodiment of the present application;

[0122] Fig. 9 is a flow chart of a flushing method of a medical catheter pump system with a transition phase provided by an exemplary embodiment of the present application;

[0123] Fig.10 is a flow chart of a flushing method for a medical catheter pump system provided by another exemplary embodiment of the present application;

[0124] Fig.11 is a flow chart of a flushing method for a medical catheter pump system provided by another exemplary embodiment of the present application;

[0125] Fig.12 is a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application;

[0126] Fig.13 is a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application;

[0127] Fig.14 is a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application;

[0128] Fig.15 is a block diagram of a flushing device of a medical catheter pump provided by an exemplary embodiment of the present application;

[0129] Fig.16 It is a block diagram of a flushing device of a medical catheter pump provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0130] In order to make the purpose, technical scheme and advantages of the present application clearer, the implementation mode of the present application will be further described in detail below in conjunction with the accompanying drawings. The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation modes described in the following exemplary embodiments do not represent all implementation modes consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0131] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0132] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.

[0133] Ventricular assist system, a circulatory assist device system that replaces ventricular work, including but not limited to extracorporeal ventricular assist system, transcatheter ventricular assist system, and implantable ventricular assist system.

[0134] The transcatheter ventricular assist system, including the transcatheter ventricular assist system control host (hereinafter referred to as: control device), and the transcatheter ventricular assist system catheter pump system (hereinafter referred to as: medical catheter pump system) used in conjunction with it, is an interventional blood pump suitable for providing temporary left ventricular circulation assistance in related operations.

[0135] Medical catheter pump: refers to a catheter pump used to assist the heart in providing blood circulation power in medical scenarios. Optionally, the medical catheter pump is a heart pump inserted into a living body. Optionally, some or all components of the medical catheter pump are inserted into a living body.

[0136] Figure 1 A schematic diagram of an application scenario of a medical catheter pump provided by an embodiment of the present application is shown. The medical catheter pump includes a driving catheter handle (not shown in the figure), a catheter 102 and a pump head 103. The driving motor 101 is coupled to the proximal end of the catheter 102 through the driving catheter handle, and the pump head 103 is connected to the distal end of the catheter 102.

[0137] The pump head 103 in the medical catheter pump can be percutaneously inserted into the heart through the peripheral blood vessels along with the catheter 102. The pump head 103 will be inserted between the left ventricle and the ascending aorta. The blood inlet of the pump head 103 will be inserted into the left ventricle, and the blood outlet of the pump head 103 will be inserted into the ascending aorta. The driving motor can be connected to the interventional pump to drive the impeller in the pump head to rotate, thereby pumping blood from the left ventricle into the ascending aorta to achieve ventricular assist function.

[0138] Figure 2 A schematic diagram of a ventricular assist system provided by an exemplary embodiment of the present application is shown. The ventricular assist system includes an irrigation pump assembly 210, a first three-way valve 220, a second three-way valve 230 and a medical catheter pump 240.

[0139] The first valve port 221 of the first three-way valve 220 is connected to the first flushing passage driven by the flushing pump assembly 210, the second valve port 222 of the first three-way valve 220 is connected to the medical catheter pump 240, the second valve port 222 of the first three-way valve 220 is connected to the first flushing interface (not shown) of the medical catheter pump 240, and the first three-way valve 220 also has a third valve port 223. The ventricular assist system may also include a flushing liquid container 250. The first flushing passage includes a passage formed by connecting the first three-way valve 220 and the flushing liquid container 250 through a pipeline.

[0140] The first valve port 231 of the second three-way valve 230 is connected to the second flushing passage driven by the flushing pump assembly 210, the second valve port 232 of the second three-way valve 230 is connected to the medical catheter pump 240, the second valve port 232 of the second three-way valve 230 is connected to the second flushing interface (not shown) of the medical catheter pump 240, and the second three-way valve 230 also has a third valve port 233. The second flushing passage includes a passage formed by connecting the second three-way valve 230 and the flushing liquid container 250 through a pipeline.

[0141] A three-way valve refers to a valve body with three valve ports, and the valve ports in the three-way valve can be controlled to open or close to form a passage in the valve. For example, the first valve port and the second valve port are connected to form a passage in the valve, the first valve port and the third valve port are connected to form a passage in the valve, the second valve port and the third valve port are connected to form a passage in the valve, and any two of the first valve port, the second valve port and the third valve port are connected to form a passage in the valve.

[0142] The three-way valve is provided with a control structure, which can control the conduction state between any two valve ports in the three-way valve. The control structure can be a purely mechanical structure or an electrically controlled mechanical mechanism. The conduction state of the three-way valve can be adjusted manually or by a control device.

[0143] The first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing positions include but are not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different positions in the ventricular assist system can be flushed or pre-filled respectively, and pre-filling or flushing of different flushing positions can be achieved respectively. Compared with pre-filling or flushing the entire flushing position at one time, the method of pre-filling or flushing by dividing the positions can allow each flushing position to be fully flushed or pre-filled, so that the gas at different positions can be discharged more thoroughly, avoiding bubbles from remaining in some narrow gaps, thereby improving the exhaust effect of pre-filling or flushing the entire system as a whole.

[0144] In an optional embodiment, the ventricular assist system further includes a control device. The control device is used to control the pumping flow rate corresponding to the flushing pump assembly. By controlling the flushing pump assembly through the control device, the pumping flow rate of the priming or flushing can be controlled more stably. In addition, the control device can also control the conduction state of the first three-way valve and the second three-way valve, so that the flushing liquid can be flushed or pre-filled at different flushing positions under the pumping action of the flushing pump assembly.

[0145] Before the medical catheter pump enters the human body through the skin, it needs to be flushed to expel the air in the medical catheter pump. The flushing process includes the pre-filling stage and the overall flushing stage. The pre-filling stage is used to quickly fill the flushing liquid, and the overall flushing stage is used to continuously flush the entire flushing passage.

[0146] In one embodiment, the pre-filling stage includes a first pre-filling stage and a second pre-filling stage, and the first pre-filling stage and the second pre-filling stage are used to fill different flushing positions with flushing liquid. The first pre-filling stage can be a stage for pre-filling the inner cavity of the medical catheter pump to discharge the air in the inner cavity of the medical catheter pump to prevent bubbles from remaining in the small gaps in the inner cavity of the medical catheter pump. The second pre-filling stage can be a stage for pre-filling the flushing pipeline in the medical catheter pump system to discharge the air in the flushing pipeline.

[0147] For the first pre-charge stage, Figure 3 A schematic diagram of a ventricular assist system in a first priming stage provided by an exemplary embodiment of the present application is shown. The ventricular assist system includes a flushing pump assembly 210 , a first three-way valve 220 , a second three-way valve 230 , and a medical catheter pump 240 .

[0148] In the first pre-filling stage, the second valve port 222 and the third valve port 223 of the first three-way valve 220 are connected, the second valve port 232 and the third valve port 233 of the second three-way valve 230 are connected, and the third valve port 233 of the second three-way valve 230 is connected to the flushing assembly 260, or the third valve port 223 of the first three-way valve 220 is connected to the flushing assembly 260. In the present application, the first three-way valve refers to the three-way valve located on the left side of the figure, and the second three-way valve refers to the three-way valve located on the right side of the figure. In the present application, only the third valve port 233 of the second three-way valve 230 is connected to the flushing assembly 260 as an example. Similarly, the third valve port 223 of the first three-way valve 220 can be connected to the flushing assembly 260. The flushing assembly is used to provide the flushing liquid required to fill the inner cavity of the medical catheter pump. Among them, the first pre-filling stage includes the stage of filling the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly.

[0149] In the first pre-filling stage, under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the third valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the second valve port 232 of the second three-way valve 230, and the flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and then is discharged through the third valve port 223 of the first three-way valve 220. Within a certain period of time, the flushing liquid is infused according to the above path, thereby completing the flushing liquid pre-filling of the inner cavity of the medical catheter pump and discharging the air in the inner cavity.

[0150] By arranging a first three-way valve and a second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve. By flushing the inner cavity of the medical catheter pump through the additional flushing component, the air in the inner cavity can be effectively exhausted, and bubbles can be avoided from remaining in the small gaps in the inner cavity.

[0151] Optionally, the flushing assembly includes at least one of a syringe pump, a syringe, a needle and a pressurized fluid bag.

[0152] Optionally, the flushing assembly 260 is a fast flushing assembly, and the instantaneous flow rate of the flushing liquid provided by the fast flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly 210. Optionally, the fast flushing assembly includes a pressurizing device. Optionally, the fast flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the fast flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly 210 to the inner cavity of the medical catheter pump.

[0153] When flushing the inner cavity, by using a fast flushing component to provide a larger instantaneous flow rate, the flushing fluid can be quickly infused into the inner cavity, thereby more quickly exhausting the air in the inner cavity, and bubbles are less likely to remain under the instantaneous large flow rate. Compared with the method of pre-filling the inner cavity by pumping flushing fluid into the inner cavity through a flushing pump component, the exhaust effect of pre-filling the inner cavity by providing an instantaneous large flow rate through the fast flushing component is better.

[0154] In an exemplary embodiment, the medical catheter pump 240 includes:

[0155] catheter 242;

[0156] A drive shaft (not shown) is rotatably disposed in the guide tube 242;

[0157] The pump head 243 includes: a pump housing connected to the distal end of the catheter 242, and an impeller received in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate and pump blood;

[0158] The driving catheter handle 241 includes: a rotor that can be driven by a driving motor; the proximal end of the driving shaft is connected to the rotor, and an inner cavity is formed in the driving catheter handle to rotatably support the rotor; the catheter is connected to the inner cavity, and the driving catheter handle is provided with a first flushing interface and a second flushing interface that are connected to the inner cavity. The first three-way valve 220 can be set at the first flushing interface, and the second three-way valve 230 can be set at the second flushing interface;

[0159] Among them, a part of the flushing liquid entering the inner cavity through the second flushing interface enters the catheter 242 and is completely discharged into the human body at the pump head 243, and the other part passes through the rotor and is discharged from the first flushing interface.

[0160] Specifically, the driving catheter handle 241 includes a coupling shell connected to the proximal end of the catheter 242 and detachably connected to the driving motor corresponding to the medical catheter pump 240; an inner cavity is formed in the coupling shell to rotatably support the rotor therein; the coupling shell is provided with a first flushing interface and a second flushing interface connected to the inner cavity.

[0161] Figure 3 It is also shown that the flushing pump assembly 210 includes a flushing pump 211 and a circulating pump 212. The functions of the flushing pump 211 and the circulating pump 212 will be described in detail below. Optionally, the flushing pump 211 and the circulating pump 212 can pump liquid through an extrusion pipeline, such as a roller pump, a peristaltic pump, etc., which is not limited in the embodiments of the present application. Optionally, the flushing pump and the peristaltic pump can have an inlet and an outlet, and the flushing liquid enters the pump through the inlet, is pumped by a pumping mechanism (such as an impeller, etc.), and is discharged from the outlet.

[0162] In an exemplary embodiment, the ventricular assist system further comprises an irrigation circuit, which forms the first irrigation passage and the second irrigation passage.

[0163] In a possible embodiment, the flushing pipeline includes a supplementary pipeline L1 connected to the flushing liquid container 250, and the supplementary pipeline L1 is connected to the flushing liquid inlet pipe L2 and the flushing liquid outlet pipe L3 through a connecting structure. Among them, the flushing liquid inlet pipe L2 is connected to the second three-way valve and is connected to the second flushing interface through the second three-way valve; the flushing liquid outlet pipe L3 is connected to the first three-way valve and is connected to the first flushing interface through the first three-way valve. The flushing liquid inlet pipe L2, the cavity of the medical catheter pump and the flushing liquid outlet pipe L3 form a circulating flushing loop, and the flushing liquid circulates and flushes in the loop to cool the inner cavity of the medical catheter pump. Under this structure, the supplementary pipeline L1 forms the first flushing passage through the connecting structure with the flushing liquid outlet pipe L3, and the supplementary pipeline L1 forms the second flushing passage through the connecting structure with the flushing liquid inlet pipe L2. Optionally, the supplementary pipeline L1, the connecting structure, the flushing liquid inlet pipe L2, and the flushing liquid outlet pipe L3 can be an integrally formed pipeline or an assembled and connected pipeline.

[0164] Optionally, a circulation pump is provided on the circulating flushing loop to drive the flushing liquid to flow. For example, the circulation pump is provided on the flushing liquid inlet pipe L2 or the flushing liquid outlet pipe L3, and the flushing liquid is pumped by squeezing the pipeline. Optionally, the flushing pump is provided on the replenishing pipeline L1 to replenish the flushing liquid to the circulating flushing loop.

[0165] In another possible implementation, the flushing pipeline may include a flushing liquid inlet pipe and a flushing liquid outlet pipe, which are respectively connected to the flushing liquid container 250, the flushing liquid inlet pipe is connected to the second three-way valve, and communicates with the second flushing interface through the second three-way valve; the flushing liquid outlet pipe is connected to the first three-way valve, and communicates with the first flushing interface through the first three-way valve. The flushing liquid inlet pipe, the cavity of the medical catheter pump and the flushing liquid outlet pipe can still form a circulating flushing loop.

[0166] Optionally, a circulation pump is provided on the circulating flushing loop to drive the flushing liquid to flow. For example, the circulation pump is provided on the flushing liquid outlet pipe to pump the outflowing flushing liquid back to the flushing liquid container by squeezing the pipeline. Optionally, the flushing pump is provided on the flushing liquid inlet pipe to pump the flushing liquid into the inner cavity of the medical catheter pump.

[0167] For the second pre-charge stage, Figure 4 A schematic diagram of a ventricular assist system in the second priming stage provided by an exemplary embodiment of the present application is shown. The ventricular assist system includes a flushing pump assembly 210, a first three-way valve 220, a second three-way valve 230 and a medical catheter pump 240.

[0168] In the second priming stage, the first valve port 221 and the third valve port 223 of the first three-way valve 220 are connected, and the first valve port 231 and the third valve port 233 of the second three-way valve 230 are connected; wherein the second priming stage includes a stage of filling the first flushing passage and the second flushing passage with flushing fluid through the flushing pump assembly 210. The ventricular assist system also includes a flushing fluid container 250, and the first flushing passage includes a passage formed by connecting the first three-way valve 220 and the flushing fluid container 250 through a flushing catheter. The second flushing passage includes a passage formed by connecting the second three-way valve 230 and the flushing fluid container 250 through a flushing catheter.

[0169] In the second pre-filling stage, if the first flushing passage and the second flushing passage are connected to the first three-way valve 220 and the second three-way valve 230 respectively, then under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is respectively infused into the first flushing passage and the second flushing passage, and is respectively discharged from the third valve port 223 of the first three-way valve 220 and the third valve port 233 of the second three-way valve 230, thereby realizing the flushing liquid pre-filling of the first flushing passage and the second flushing passage, and exhausting the air in the first flushing passage and the second flushing passage. If the first flushing passage and the second flushing passage are not connected to the first three-way valve 220 and the second three-way valve 230, the flushing liquid is respectively discharged from the pipe ports of the first flushing passage and the second flushing passage.

[0170] Figure 4 It is also shown that the flushing pump assembly 210 includes a flushing pump 211 and a circulation pump 212. The flushing pump 211 is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump 212 is arranged in the passage of the second flushing passage that is not shared with the first flushing passage. The common part can refer to the supplementary pipeline L1 described above, and the passage of the second flushing passage that is not shared with the first flushing passage can refer to the flushing liquid inlet pipe L2 described above, which will not be repeated here.

[0171] Figure 4 Also shown is a medical catheter pump 240 comprising a drive catheter handle 241 , a catheter 242 , and a pump head 243 .

[0172] Compared to a method of flushing the flushing passage and the inner cavity together (in this method, the flushing liquid first passes through the flushing passage and then enters the inner cavity, and the flushing liquid is pumped by the flushing pump assembly, which makes it difficult to form a large flow rate and difficult to exhaust all the air in the inner cavity, and bubbles will remain in the inner cavity), in the embodiment of the present application, the flushing passage is pre-filled separately, thereby reducing the pre-filling path length of the inner cavity of the medical catheter pump, which not only avoids the influence of the flushing passage on the pre-filling exhaust effect of the inner cavity of the medical catheter pump, but also can quickly exhaust the bubbles in the flushing pipeline and avoid residual tiny bubbles in the flushing pipeline.

[0173] It can be understood that the above-mentioned first pre-charging stage and the second pre-charging stage can be performed by first executing the first pre-charging stage and then executing the second pre-charging stage, or by first executing the second pre-charging stage and then executing the first pre-charging stage. The above-mentioned distinction into two pre-charging stages is only to illustrate the pre-charging at different times.

[0174] In summary, the pre-charging is divided into two pre-charging stages, and the flushing liquid can be filled in different flushing positions respectively. Compared with the method of pre-charging each flushing position at the same time, the pre-charging exhaust effect of each flushing position can be effectively improved by filling the flushing liquid in each flushing position in a segmented manner, and bubbles can be avoided from remaining in the gaps in each flushing position.

[0175] In one embodiment, the priming stage is not divided into a first priming stage and a second priming stage (the first priming stage and the second priming stage can be performed simultaneously). The priming stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly, and a stage of filling the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly.

[0176] For the pre-filling stage, a possible on-off state of the three-way valve is provided, any two valve ports of the first three-way valve 220 are connected, the second valve port 232 and the third valve port 233 of the second three-way valve 230 are connected, and the third valve port 233 of the second three-way valve 230 or the third valve port 223 of the first three-way valve 220 is connected to a flushing assembly 260, and the flushing assembly 260 is used to provide the flushing liquid required to fill the inner cavity of the medical catheter pump. The pre-filling stage includes the stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly 210, and the stage of filling the inner cavity of the medical catheter pump 240 with flushing liquid through the flushing assembly 260.

[0177] In this on-off state, the first flushing passage is connected to the first three-way valve 220, and the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage respectively, the flushing liquid in the first flushing passage is discharged from the third valve port 223 of the first three-way valve 220, and the flushing liquid in the second flushing passage is discharged from the terminal pipe port of the second flushing passage, so as to realize the pre-charging of the first flushing passage and the second flushing passage, and discharge the air in the first flushing passage and the second flushing passage.

[0178] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the third valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the second valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and then is discharged through the third valve port 223 of the first three-way valve 220.

[0179] For the pre-filling stage, another possible on-off state of the three-way valve is provided, the second valve port 222 and the third valve port 223 of the first three-way valve 220 are connected, the second valve port 232 and the third valve port 233 of the second three-way valve 230 are connected, and the third valve port 233 of the second three-way valve 230 or the third valve port 223 of the first three-way valve 220 is connected to a flushing assembly, which is used to provide the flushing fluid required to fill the inner cavity of the medical catheter pump.

[0180] In this on-off state, the first flushing passage is disconnected from the first three-way valve 220, and the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is respectively infused into the first flushing passage and the second flushing passage, and is respectively discharged from the terminal nozzles of the first flushing passage and the second flushing passage, so as to realize the pre-charging of the first flushing passage and the second flushing passage, and discharge the air in the first flushing passage and the second flushing passage.

[0181] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the third valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the second valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and then is discharged through the third valve port 223 of the first three-way valve 220.

[0182] Optionally, the flushing assembly is a quick flushing assembly, and the quick flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve is used to fill the inner cavity of the medical catheter pump with flushing liquid; the instantaneous flow rate of the flushing liquid provided by the quick flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly. Optionally, the quick flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the quick flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly to the inner cavity of the medical catheter pump.

[0183] In summary, a method for simultaneous pre-filling is provided, which can save time and meet the clinical time requirements. The flushing pump assembly and the flushing assembly simultaneously fill the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump with flushing liquid. Compared with filling the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump with flushing liquid through the flushing pump assembly, the flushing assembly is introduced to fill the flushing liquid at the same time. The flushing liquid provided by the flushing assembly will be mainly used to fill the inner cavity of the medical catheter pump, and the introduction of additional flushing liquid flow speeds up the complete flushing process.

[0184] Compared with the method of flushing the flushing passage and the inner cavity as a whole in the related art (in this method, the flushing liquid first passes through the flushing passage and then enters the inner cavity, and the flushing liquid is pumped by the flushing pump assembly, which makes it difficult to form a large flow rate and difficult to exhaust the air in the inner cavity, and bubbles will remain in the inner cavity), in the embodiment of the present application, an additional flushing assembly is introduced to fill the inner cavity of the medical catheter pump, so that the flushing liquid can be quickly infused into the inner cavity, thereby exhausting the air in the inner cavity more quickly, and bubbles are not likely to remain under instantaneous large flow rates. Compared with the method of pre-filling the inner cavity by pumping flushing liquid into the inner cavity through the flushing pump assembly, the exhaust effect of pre-filling the inner cavity by providing an instantaneous large flow rate through the fast flushing assembly is better.

[0185] The on-off state of the three-way valve in the pre-filling stage has been described above, and the on-off state of the three-way valve in the overall flushing stage will be described below. The overall flushing stage includes a stage in which the flushing pump assembly 210 flushes the circulating flushing circuit formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump 240.

[0186] Figure 5 A schematic diagram of a ventricular assist system in an overall flushing stage provided by an exemplary embodiment of the present application is shown. The ventricular assist system includes a flushing pump assembly 210 , a first three-way valve 220 , a second three-way valve 230 , and a medical catheter pump 240 .

[0187] In the overall flushing stage, the first valve port 221 and the second valve port 222 of the first three-way valve 220 are connected, and the first valve port 231 and the second valve port 232 of the second three-way valve 230 are connected.

[0188] Figure 5 It is also shown that the flushing pump assembly 210 includes a flushing pump 211 and a circulation pump 212. The flushing pump 211 is used to deliver flushing liquid to the inner cavity of the medical catheter pump 240 through the second flushing passage during the overall flushing stage, and the circulation pump 212 is used to control the flushing liquid to circulate and flush the inner cavity of the medical catheter pump 240 during the overall flushing stage.

[0189] The flushing pump 211 is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, such as the above-mentioned supplementary pipeline L1; the circulation pump 212 is arranged in the passage of the second flushing passage that is not shared with the first flushing passage, such as the above-mentioned flushing liquid inlet pipe L2. Figure 5 Also shown is a medical catheter pump 240 comprising a drive catheter handle 241 , a catheter 242 , and a pump head 243 .

[0190] Figure 5 The overall flushing stage is shown. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the second flushing passage, injected into the inner cavity of the driving catheter handle 241, and circulates to the first flushing passage. The flushing liquid passing through the first flushing passage will flow into the second flushing passage again.

[0191] Furthermore, a portion of the flushing fluid flowing into the inner cavity of the driving catheter handle 241 flows into the catheter 242 of the medical catheter pump 240 , and is completely discharged at the pump head 243 .

[0192] Figure 6 A flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application is shown. The medical catheter pump system includes a medical catheter pump and a flushing pipeline. The method includes:

[0193] Step 620, in the pre-filling stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve; the following only takes the flushing assembly connected to the third valve port of the first three-way valve as an example.

[0194] Combined with reference Figure 2 In the present application, the first flushing interface (not shown) of the medical catheter pump 240 is connected to the first flushing passage driven by the flushing pump assembly 210 through the valve passage between the second valve port 222 and the first valve port 221 of the first three-way valve 220, and the first three-way valve 220 also has a third valve port 223. Optionally, the ventricular assist system further includes a flushing liquid container 250. The first flushing passage includes a passage formed by connecting the first three-way valve 220 and the flushing liquid container 250 through a flushing catheter.

[0195] The second flushing interface (not shown) of the medical catheter pump 240 is connected to the second flushing passage driven by the flushing pump assembly 210 through the valve passage between the second valve port 232 and the first valve port 231 of the second three-way valve 230. The second three-way valve 230 also has a third valve port 233. Optionally, the ventricular assist system further includes a flushing liquid container 250. The second flushing passage includes a passage formed by connecting the second three-way valve 230 and the flushing liquid container 250 through a flushing catheter.

[0196] At least one flushing line forms a first flushing passage and a second flushing passage, such as Figure 3 The embodiments are introduced and will not be described in detail here. Flushing liquid, in this application, refers to the liquid used to squeeze out the air.

[0197] When the flushing liquid is filled in the pre-filling stage, the flushing liquid in the first flushing passage will flow out from the flushing liquid container through the first flushing passage or through the first three-way valve. The flushing liquid in the second flushing passage will flow out from the flushing liquid container through the second flushing passage or through the second three-way valve.

[0198] When the flushing liquid is filled in the pre-filling stage, the flushing liquid will flow from the second three-way valve to the first three-way valve through the inner cavity of the medical catheter pump.

[0199] Optionally, the medical catheter pump includes a driving catheter handle (ie, an inner cavity), a catheter and a pump head.

[0200] Step 640, in the overall flushing stage, flushing the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly.

[0201] Optionally, during the overall flushing stage, the control device controls the flushing pump assembly to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

[0202] During the overall flushing stage, the first valve port and the second valve port of the first three-way valve are controlled to be connected, and the first valve port and the second valve port of the second three-way valve are controlled to be connected. The first three-way valve and the second three-way valve can be mechanical valves or electrically controlled valves.

[0203] During the overall flushing stage, the flushing pump assembly flushes the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump, as well as the pump head of the medical catheter pump.

[0204] In summary, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing positions include but are not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different positions in the ventricular assist system can be flushed or pre-filled respectively, and pre-filling or flushing of different flushing positions can be achieved respectively. Compared with pre-filling or flushing the entire flushing position at one time, the method of pre-filling or flushing by divided positions can allow each flushing position to be fully flushed or pre-filled, so that the gas at different positions can be discharged more thoroughly, avoiding bubbles from remaining in some narrow gaps, thereby improving the overall exhaust effect of pre-filling or flushing the entire system.

[0205] Furthermore, by arranging a first three-way valve and a second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve, and the medical catheter pump can be flushed through the additional flushing component to exhaust the air in the inner cavity of the medical catheter pump and avoid residual bubbles in the small gaps in the inner cavity of the medical catheter pump.

[0206] based on Figure 6 In the optional embodiment shown, the pre-filling stage in step 620 includes a first pre-filling stage and a second pre-filling stage. Figure 7 A flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application is shown, and step 620 can be replaced by S1 and S2.

[0207] S1, in a first pre-filling stage, the inner cavity of the medical catheter pump is filled with flushing liquid through a flushing component connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve.

[0208] In the first pre-charging stage, the second valve port and the third valve port of the first three-way valve are controlled to be connected; and the second valve port and the third valve port of the second three-way valve are controlled to be connected. Figure 3 , Figure 3 It is shown that the second valve port 222 and the third valve port 223 of the first three-way valve 220 are connected, and the second valve port 232 and the third valve port 233 of the second three-way valve 230 are connected. The third valve port 233 of the second three-way valve 230 is connected to the flushing assembly 260 .

[0209] Optionally, the flushing assembly includes a fast flushing assembly; in the first pre-filling stage, the inner cavity of the medical catheter pump is filled with flushing liquid through the fast flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve, and the instantaneous flow rate of the flushing liquid provided by the fast flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly. Optionally, the fast flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the fast flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly to the inner cavity of the medical catheter pump.

[0210] S2, in the second pre-filling stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly.

[0211] Optionally, in the second pre-filling stage, the control device controls the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid.

[0212] In the second pre-charging stage, the first valve port and the third valve port of the first three-way valve are controlled to be connected; and the first valve port and the third valve port of the second three-way valve are controlled to be connected. Figure 4 , Figure 4It is shown that at this time, the first valve port 221 and the third valve port 223 of the first three-way valve 220 are connected, and the first valve port 231 and the third valve port 233 of the second three-way valve 230 are connected.

[0213] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0214] In one embodiment, in the second pre-filling stage, the rotation speeds of the flushing pump and the circulating pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range. Optionally, the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel are made the same or similar, the first sub-channel includes a channel on the first flushing channel that is not shared with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that is not shared with the first flushing channel; the flushing liquid is filled into the first flushing channel and the second flushing channel by the flushing pump and the circulating pump.

[0215] In one embodiment, the rotation speeds of the flushing pump and the circulation pump are controlled so that the first flushing passage and the second flushing passage are filled with the flushing fluid as quickly as possible. Clinically, the filling time of the flushing fluid needs to be as short as possible.

[0216] For example, in Figure 4 In the structure shown, the speed of the flushing pump is twice that of the circulating pump, so that the flushing flow rates of the first flushing passage and the second flushing passage can remain relatively consistent, thereby enabling the first flushing passage and the second flushing passage to be pre-filled quickly and synchronously.

[0217] In summary, the pre-charging is divided into two pre-charging stages, and the flushing liquid can be filled in different flushing positions respectively. Compared with the method of pre-charging each flushing position at the same time, the pre-charging exhaust effect of each flushing position can be effectively improved by filling the flushing liquid in each flushing position in a segmented manner, and bubbles can be avoided from remaining in the gaps in each flushing position.

[0218] based on Figure 6 In the optional embodiment shown, the pre-filling stage in step 620 is not divided into a first pre-filling stage and a second pre-filling stage. Figure 8 A flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application is shown, and step 620 can be replaced by S3:

[0219] S3, in the pre-filling stage, the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing component connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve; at the same time, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump component.

[0220] Optionally, the control device controls the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid.

[0221] In one embodiment, in the pre-filling stage, any two valve ports of the first three-way valve are controlled to be connected, and the second valve port and the third valve port of the second three-way valve are controlled to be connected. (At this time, the third valve port of the second three-way valve is connected to the flushing assembly).

[0222] In this on-off state, the first flushing passage is connected to the first three-way valve 220, and the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage respectively, the flushing liquid in the first flushing passage is discharged from the third valve port 223 of the first three-way valve 220, and the flushing liquid in the second flushing passage is discharged from the terminal pipe port of the second flushing passage, so as to realize the pre-charging of the first flushing passage and the second flushing passage, and discharge the air in the first flushing passage and the second flushing passage.

[0223] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the third valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the second valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and then is discharged through the third valve port 223 of the first three-way valve 220.

[0224] Alternatively, in one embodiment, during the pre-filling stage, the second valve port and the third valve port of the first three-way valve are controlled to be connected, and the second valve port and the third valve port of the second three-way valve are controlled to be connected. (At this time, the third valve port of the second three-way valve is connected to the flushing component, or the third valve port of the first three-way valve is connected to the flushing component)

[0225] In this on-off state, the first flushing passage is disconnected from the first three-way valve 220, and the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is respectively infused into the first flushing passage and the second flushing passage, and is respectively discharged from the terminal nozzles of the first flushing passage and the second flushing passage, so as to realize the pre-charging of the first flushing passage and the second flushing passage, and discharge the air in the first flushing passage and the second flushing passage.

[0226] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the third valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the second valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and then is discharged through the third valve port 223 of the first three-way valve 220.

[0227] Alternatively, in one embodiment, during the pre-filling stage, any two valve ports of the second three-way valve are controlled to be connected, and the second valve port and the third valve port of the first three-way valve are controlled to be connected. (At this time, the third valve port of the first three-way valve is connected to the flushing assembly)

[0228] In this on-off state, the second flushing passage is connected to the second three-way valve 230, and the first flushing passage is disconnected from the first three-way valve 220. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage respectively, the flushing liquid in the second flushing passage is discharged from the third valve port 233 of the second three-way valve 230, and the flushing liquid in the first flushing passage is discharged from the terminal pipe port of the first flushing passage, thereby pre-charging the first flushing passage and the second flushing passage and discharging the air in the first flushing passage and the second flushing passage.

[0229] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the first three-way valve 220 through the third valve port 223 of the first three-way valve 220, and enters the inner cavity of the driving catheter handle 241 through the second valve port 222 of the first three-way valve 220. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the second three-way valve 230 from the second valve port 232 of the second three-way valve 230, and then is discharged through the third valve port 233 of the second three-way valve 230.

[0230] In the pre-filling stage, the third valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing assembly.

[0231] Optionally, the flushing assembly includes a quick flushing assembly; the quick flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve is used to fill the inner cavity of the medical catheter pump with flushing liquid, and the instantaneous flow rate of the flushing liquid provided by the quick flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly. Optionally, the quick flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the quick flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly to the inner cavity of the medical catheter pump.

[0232] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0233] In one embodiment, the rotation speeds of the flushing pump and the circulating pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range. Optionally, the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel are made the same or similar, the first sub-channel includes a channel on the first flushing channel that is not shared with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that is not shared with the first flushing channel; the flushing liquid is filled into the first flushing channel and the second flushing channel by the flushing pump and the circulating pump.

[0234] In one embodiment, the rotation speeds of the flushing pump and the circulation pump are controlled so that the first flushing passage and the second flushing passage are filled with the flushing fluid as quickly as possible. Clinically, the filling time of the flushing fluid needs to be as short as possible.

[0235] For example, the rotation speed of the flushing pump is twice that of the circulation pump, so that the flushing flow rates of the first flushing passage and the second flushing passage can be kept relatively consistent, thereby enabling the first flushing passage and the second flushing passage to be pre-filled quickly and synchronously.

[0236] In summary, a method for simultaneous pre-filling is provided, which can save time and meet the clinical time requirements. The flushing pump assembly and the flushing assembly are used to simultaneously fill the first flushing line, the second flushing line and the inner cavity of the medical catheter pump with flushing liquid. Compared with filling the first flushing line, the second flushing line and the inner cavity of the medical catheter pump with flushing liquid through the flushing pump assembly, the flushing assembly is introduced to also fill the flushing liquid at the same time. The flushing liquid provided by the flushing assembly will be mainly used to fill the inner cavity of the medical catheter pump, and the introduction of additional flushing liquid flow speeds up the complete flushing process.

[0237] Compared with the method of flushing the flushing passage and the inner cavity in the related art (in this method, the flushing liquid first passes through the flushing passage and then enters the inner cavity, and the flushing liquid is pumped by the flushing pump assembly, which makes it difficult to form a large flow rate and difficult to completely exhaust the air in the inner cavity, and bubbles will remain in the inner cavity), in the embodiment of the present application, an additional flushing assembly is introduced to fill the inner cavity of the medical catheter pump, so that the flushing liquid can be quickly infused into the inner cavity, thereby exhausting the air in the inner cavity more quickly, and bubbles are not likely to remain under instantaneous large flow rates. Compared with the method of pre-filling the inner cavity by pumping flushing liquid into the inner cavity through the flushing pump assembly, the exhaust effect of pre-filling the inner cavity by providing an instantaneous large flow rate through the fast flushing assembly is better.

[0238] based on Figure 6 In the alternative embodiment shown, Fig. 9 A flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application is shown, and before step 640, it also includes S4:

[0239] S4, in the transition phase before entering the overall flushing phase, the pumping flow rate of the flushing pump assembly is controlled to be a second flow rate, the second flow rate is smaller than the first flow rate, and the first flow rate is the pumping flow rate of the flushing pump assembly in the pre-filling phase.

[0240] Optionally, in the transition phase before entering the overall flushing phase, the control device controls the pumping flow rate of the flushing pump assembly to be a second flow rate. Optionally, the second flow rate is the flow rate in the catheter of the medical catheter pump. Optionally, the second flow rate does not exceed the in-body flow rate acceptable to the biological body.

[0241] In an optional embodiment, during the transition phase, the control device displays a prompt message for switching to the overall flushing phase; in response to the prompt message, a confirmation operation is received to enter the overall flushing phase. For example, a prompt message "Please turn the three-way valve of the medical catheter pump flushing liquid inlet and outlet to the specified position!" is displayed, for example, "Overall flushing is about to begin, please confirm."

[0242] In one embodiment, in the transition phase, any two valve ports of the first three-way valve are both connected, and the second valve port and the third valve port of the second three-way valve are controlled to be connected.

[0243] In another embodiment, in the transition stage, the second valve port and the third valve port of the first three-way valve are connected, and the second valve port and the third valve port of the second three-way valve are controlled to be connected.

[0244] In yet another embodiment, in the transition phase, any two valve ports of the second three-way valve are connected, and the second valve port and the third valve port of the first three-way valve are connected.

[0245] The above three conduction states are the three conduction states that may be formed in the pre-filling stage. In the transition stage, you can wait and maintain the conduction state of the three-way valve left over from the pre-filling stage until the three-way valve is adjusted to the required conduction state to enter the overall flushing stage.

[0246] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0247] In one embodiment, the rotation speeds of the flushing pump and the circulating pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range. Optionally, the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel are made the same or similar, the first sub-channel includes a channel on the first flushing channel that does not overlap with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that does not overlap with the first flushing channel; the flushing liquid is filled into the first flushing channel and the second flushing channel by the flushing pump and the circulating pump.

[0248] Optionally, the medical catheter pump includes a driving catheter handle, a catheter and a pump head. The pumping flow rate of the above-mentioned flushing pump assembly refers to the flushing liquid flow rate in the catheter of the medical catheter pump.

[0249] In summary, the transition phase reduces the pumping flow of the flushing pump assembly to prevent excessive flushing liquid loss. In addition, in the transition phase, the control device only needs to control the flushing pump assembly to reduce work to form the above-mentioned lower flushing liquid flow rate, waiting for the flushing pipeline and the three-way valve to switch to the connection mode and conduction state corresponding to the overall flushing phase, thereby reducing the waste of flushing liquid in the transition phase between the pre-filling phase and the overall flushing phase.

[0250] based on Figure 6 In the alternative embodiment shown, Fig.10 A flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application is shown, and before step 640, it also includes S5:

[0251] S5, in the overall flushing stage, controlling the first valve port and the second valve port of the first three-way valve to be connected, and controlling the first valve port and the second valve port of the second three-way valve to be connected;

[0252] Combined with reference Figure 5 , Figure 4 It is shown that at this time, the first valve port 221 and the second valve port 222 of the first three-way valve 220 are connected, and the first valve port 231 and the second valve port 232 of the second three-way valve 230 are connected.

[0253] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0254] Step 640 includes: during the overall flushing stage, controlling the rotation speed of the flushing pump based on the flushing liquid flow of the catheter of the medical catheter pump; and controlling the rotation speed of the circulating pump based on the flushing liquid flow of the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; flushing the circulating flushing circuit and the catheter of the medical catheter pump through the flushing pump and the circulating pump.

[0255] Optionally, the flushing pump and the circulation pump are peristaltic pumps, which pump the flushing liquid by squeezing the flushing catheter.

[0256] It should be noted that the present application is used for flushing a medical catheter pump, which is an invasive catheter pump in a living body. The overall flushing phase of the medical catheter pump will be carried out in the living body, and the living body cannot accept too high an in-body flow rate. The rotation speed of the flushing pump makes the flushing liquid flow rate in the catheter of the medical catheter pump less than the in-body flow rate acceptable to the living body. The rotation speed of the circulating pump allows the circulating flushing loop to circulate and flush at a high speed.

[0257] In schematic, the flushing pump is controlled to rotate at a first speed, corresponding to the flow rate in the catheter of the medical catheter pump being a first target flow rate, the first target flow rate does not exceed the in-body flow rate acceptable to the biological body, and the first target flow rate is equal to or approximates the flow rate of the flushing liquid entering the human body through the pump head. In schematic, the circulation pump is controlled to rotate at a second speed, corresponding to the second target flow rate, the second target flow rate is equal to or approximates the sum of the circulation flow rate in the inner cavity of the medical catheter pump and the in-body flow rate of the flushing liquid in the catheter of the medical catheter pump, and the second target flow rate is greater than a preset threshold value, so as to achieve high-speed circulation flushing of the flushing liquid in the inner cavity of the medical catheter pump.

[0258] Fig.11 A flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application is shown. The medical catheter pump system includes a medical catheter pump and at least one flushing pipeline. The method is executed by a control device corresponding to the flushing pump assembly, and the control device is connected to the flushing pump assembly. The method includes:

[0259] Step 1120, in the pre-filling stage, controlling the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid;

[0260] Combined with reference Figure 2 In the present application, the first flushing interface (not shown) of the medical catheter pump 240 is connected to the first flushing passage driven by the flushing pump assembly 210 through the valve passage between the second valve port 222 and the first valve port 221 of the first three-way valve 220, and the first three-way valve 220 also has a third valve port 223. Optionally, the ventricular assist system further includes a flushing liquid container 250. The first flushing passage includes a passage formed by connecting the first three-way valve 220 and the flushing liquid container 250 through a flushing catheter.

[0261] The second flushing interface (not shown) of the medical catheter pump 240 is connected to the second flushing passage driven by the flushing pump assembly 210 through the valve passage between the second valve port 232 and the first valve port 231 of the second three-way valve 230. The second three-way valve 230 also has a third valve port 233. Optionally, the ventricular assist system further includes a flushing liquid container 250. The second flushing passage includes a passage formed by connecting the second three-way valve 230 and the flushing liquid container 250 through a flushing catheter.

[0262] At least one flushing line forms a first flushing passage and a second flushing passage, such as Figure 3 The embodiments are introduced and will not be described in detail here. Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the overlapping part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that does not overlap with the first flushing passage.

[0263] In one embodiment, during the pre-filling stage, the rotation speeds of the flushing pump and the circulating pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range, the first sub-channel includes a channel on the first flushing channel that does not overlap with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that does not overlap with the first flushing channel; the first flushing channel and the second flushing channel are filled with flushing liquid by the flushing pump and the circulating pump.

[0264] For the rest, please refer to the above Figures 6 to 10 The relevant introduction will not be repeated here.

[0265] Step 1140, during the overall flushing stage, control the flushing pump assembly to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump.

[0266] In one embodiment, the overall flushing stage further includes a transition stage. In the transition stage before entering the overall flushing stage, the pumping flow rate of the flushing pump is controlled to be a second flow rate, which is smaller than the first flow rate. The first flow rate is the pumping flow rate of the flushing pump in the pre-filling stage.

[0267] In one embodiment, during the overall flushing stage, the rotation speed of the flushing pump is controlled based on the flushing liquid flow of the catheter of the medical catheter pump; and the rotation speed of the circulating pump is controlled based on the flushing liquid flow of the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; the circulating flushing circuit and the catheter of the medical catheter pump are flushed by the flushing pump and the circulating pump.

[0268] For the rest, please refer to the above Figures 6 to 10 The relevant introduction will not be repeated here.

[0269] In summary, the first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing positions include but are not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different positions in the ventricular assist system can be flushed or pre-filled respectively, and pre-filling or flushing of different flushing positions can be achieved respectively. Compared with pre-filling or flushing the entire flushing position at one time, the method of pre-filling or flushing by divided positions can allow each flushing position to be fully flushed or pre-filled, so that the gas at different flushing positions can be discharged more thoroughly, avoiding bubbles from remaining in some narrow gaps, thereby improving the exhaust effect of pre-filling or flushing the entire system as a whole.

[0270] Furthermore, by arranging a first three-way valve and a second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve, and the medical catheter pump can be flushed through the additional flushing component to exhaust the air in the inner cavity of the medical catheter pump and avoid residual bubbles in the small gaps in the inner cavity of the medical catheter pump.

[0271] The present application provides a consumable for a medical catheter pump system, the consumable for the medical catheter pump system comprising a first three-way valve and a second three-way valve;

[0272] The first valve port of the first three-way valve is used to connect to a first flushing passage driven by a flushing pump assembly, and the second valve port of the first three-way valve is used to connect to a first flushing interface of a medical catheter pump;

[0273] The first valve port of the second three-way valve is used to connect to the second flushing passage driven by the flushing pump assembly, and the second valve port of the second three-way valve is used to connect to the second flushing interface of the medical catheter pump.

[0274] In one embodiment, the consumables of the medical catheter pump system further include a flushing pipeline. The flushing pipeline forms a first flushing passage and a second flushing passage. The first three-way valve is arranged at the end of the pipe opening corresponding to the first flushing passage, and the second three-way valve is arranged at the end of the pipe opening corresponding to the second flushing passage.

[0275] In one embodiment, the medical catheter pump consumable system further includes a medical catheter pump, and the medical catheter pump includes:

[0276] catheter;

[0277] A drive shaft is rotatably disposed in the conduit;

[0278] The pump head comprises: a pump housing connected to the distal end of the catheter, and an impeller received in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate and pump blood;

[0279] The driving catheter handle comprises: a rotor driven by a driving motor; the proximal end of the driving shaft is connected to the rotor, an inner cavity for rotatably supporting the rotor is formed in the driving catheter handle; the catheter is connected to the inner cavity, the driving catheter handle is provided with a first flushing interface and a second flushing interface connected to the inner cavity, a first three-way valve is provided at the first flushing interface, and a second three-way valve is provided at the second flushing interface;

[0280] Among them, a part of the flushing liquid that enters the inner cavity through the second flushing interface enters the catheter and is completely discharged into the human body at the pump head, and the other part passes through the rotor and is discharged from the first flushing interface.

[0281] Fig.12 A schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application is shown. The ventricular assist system is a transcatheter ventricular assist system, including a control device and a medical catheter pump system used in conjunction with the control device. Among them, the control device 130 includes at least a console 131 and a drive motor 132. Optionally, the control device 130 also includes a flushing pump assembly (not shown in the figure), and the flushing pump assembly includes a flushing pump and a circulation pump. Clinical medical staff can monitor the system status and patient physiological parameters on the control host interface, and provide different degrees of circulatory assistance by adjusting the catheter pump speed according to the patient's needs, thereby temporarily maintaining the blood circulation of the patient's vital organs and unloading the heart.

[0282] The catheter pump system includes a catheter pump 120 , a delivery system (not shown in the figure), and a flushing pipeline 110 .

[0283] The catheter pump 120 includes a pump head 123 (including an impeller, a bracket and a coating), a catheter 122, a drive catheter handle 121 (including a drive catheter locking connector), a flushing pressure sensor, and a drive catheter flushing pipeline connector. The catheter pump can be percutaneously inserted into the heart through a peripheral blood vessel, the pump head 123 will be inserted between the left ventricle and the ascending aorta, the blood inlet of the pump head 123 will be inserted into the left ventricle, and the blood outlet of the pump head 123 will be inserted into the ascending aorta. The drive motor 132 can be connected to the interventional pump to drive the impeller in the pump head 123 to rotate, thereby pumping blood from the left ventricle into the ascending aorta to achieve ventricular assist function.

[0284] The delivery system includes a dilator, an interventional sheath, and an introducer. The delivery system is used to dilate blood vessels and provide a pathway for the interventional pump to be placed into the heart. The introducer and interventional sheath have the function of folding the pump head. The introducer and dilator will be removed after the interventional pump is placed in place. The interventional sheath will continue to exist in the patient's blood vessels until the interventional pump is removed. When the interventional pump is removed, the interventional sheath will also play the role of folding the pump head.

[0285] The flushing pipeline 110 at least includes the above-mentioned supplementary pipeline, a connecting structure, a flushing liquid inlet pipe and a flushing liquid outlet pipe.

[0286] The flushing pump can be connected to the flushing pipeline 110. The flushing pump realizes the flushing liquid delivery and control functions by squeezing the flushing pipeline, thereby preventing blood from entering the driving catheter of the interventional pump and generating thrombus.

[0287] The flushing pump drives the flushing pump tube on the flushing pipeline flushing kit to pump the flushing liquid in the liquid bag 140 connected to the flushing tube into the cavity in the interventional pump through the flushing tube, thereby preventing blood from entering the interventional pump catheter 122.

[0288] In one embodiment, the three-way valve is a consumable in the catheter pump 120. Fig.13 , Fig.13 It is shown that the three-way valve is a consumable in the catheter pump, in which case the flushing line will have a connector for connecting the three-way valve. Optionally, the connector may be a Luer connector.

[0289] In one embodiment, the three-way valve is a consumable in the flushing pipeline 110. Fig.14 , Fig.14 It is shown that the three-way valve is a consumable in the flushing pipeline. In this case, the driving catheter handle 121 will have a connector for connecting the three-way valve. Optionally, the connector can be a Luer connector.

[0290] Fig.15 A control device for a medical catheter pump system provided by an exemplary embodiment of the present application is shown. The medical catheter pump system includes a medical catheter pump and at least one flushing pipeline. The first flushing interface of the medical catheter pump is connected to the first flushing path driven by the flushing pump assembly through the valve inner passage between the second valve port and the first valve port of the first three-way valve. The second flushing interface of the medical catheter pump is connected to the second flushing path driven by the flushing pump assembly through the valve inner passage between the second valve port and the first valve port of the second three-way valve. The at least one flushing pipeline forms the first flushing path and the second flushing path. The device includes:

[0291] The control module 1501 is used to fill the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly during the pre-filling stage, and to fill the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve;

[0292] The control module 1501 is also used to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly during the overall flushing stage.

[0293] In an optional embodiment, the control module 1501 is also used to fill the inner cavity of the medical catheter pump with flushing liquid through a flushing assembly connected to the third valve port of the second three-way valve in the first pre-filling stage; and to fill the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly in the second pre-filling stage.

[0294] In an optional embodiment, the control module 1501 is also used to control the second valve port and the third valve port of the first three-way valve to be connected during the first pre-charging stage; and to control the second valve port and the third valve port of the second three-way valve to be connected.

[0295] In an optional embodiment, the control module 1501 is also used to control the first valve port and the third valve port of the first three-way valve to be connected during the second pre-charging stage; and to control the first valve port and the third valve port of the second three-way valve to be connected.

[0296] In an optional embodiment, the control module 1501 is also used to fill the inner cavity of the medical catheter pump with flushing liquid through a flushing assembly connected to the third valve port of the second three-way valve during the pre-filling stage; at the same time, fill the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly.

[0297] In an optional embodiment, the control module 1501 is also used to control any two valve ports of the first three-way valve to be connected, and to control the second valve port and the third valve port of the second three-way valve to be connected during the pre-charging stage.

[0298] In an optional embodiment, the control module 1501 is also used to control the second valve port and the third valve port of the first three-way valve to be connected, and to control the second valve port and the third valve port of the second three-way valve to be connected during the pre-charging stage.

[0299] In an optional embodiment, the flushing assembly includes a fast flushing assembly. The control module 1501 is further used to fill the inner cavity of the medical catheter pump with flushing liquid through the fast flushing assembly connected to the third valve port of the second three-way valve, and the instantaneous flow rate of the flushing liquid provided by the fast flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly.

[0300] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage. The control module 1501 is also used to control the rotation speed of the flushing pump and the circulation pump, so that the difference between the flushing liquid flow rate of the first sub-passage and the flushing liquid flow rate of the second sub-passage is within a preset range, the first sub-passage includes the passage of the first flushing passage that is not shared with the second flushing passage, and the second sub-passage includes the passage of the second flushing passage that is not shared with the first flushing passage; the flushing liquid is filled into the first flushing passage and the second flushing passage through the flushing pump and the circulation pump.

[0301] In an optional embodiment, the control module 1501 is also used to control the pumping flow of the flushing pump assembly to a second flow rate in a transition stage before entering the overall flushing stage, where the second flow rate is smaller than the first flow rate, and the first flow rate is the pumping flow rate of the flushing pump assembly in the pre-filling stage.

[0302] In an optional embodiment, the control module 1501 is further used to control any two valve ports of the first three-way valve to be connected, and to control the second valve port and the third valve port of the second three-way valve to be connected during the transition phase.

[0303] In an optional embodiment, the control module 1501 is further used to control the second valve port and the third valve port of the first three-way valve to be connected, and to control the second valve port and the third valve port of the second three-way valve to be connected during the transition phase.

[0304] In an optional embodiment, the device further includes a display module 1502. The display module 1502 is used to display a prompt message for switching to the overall flushing stage during the transition stage; and to enter the overall flushing stage in response to receiving a confirmation operation in response to the prompt message.

[0305] In an optional embodiment, the control module 1501 is also used to control the first valve port and the second valve port of the first three-way valve to be connected during the overall flushing stage, and to control the first valve port and the second valve port of the second three-way valve to be connected.

[0306] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage. The control module 1501 is also used to control the rotation speed of the flushing pump based on the flushing liquid flow of the catheter of the medical catheter pump during the overall flushing stage; and to control the rotation speed of the circulation pump based on the flushing liquid flow of the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; and flush the circulating flushing loop and the catheter of the medical catheter pump through the flushing pump and the circulation pump.

[0307] In summary, by arranging the first three-way valve and the second three-way valve between the flushing pump assembly and the medical catheter pump, the medical catheter pump can be connected to an additional flushing assembly through the three-way valve, and the medical catheter pump can be flushed through the additional flushing assembly to remove bubbles in the small gaps in the medical catheter pump.

[0308] Furthermore, the additional flushing assembly reduces the pumping speed pressure of the flushing pump assembly, so that the flushing pump assembly is no longer used to fill all flushing positions with flushing liquid, but is only used to fill part of the flushing positions with flushing liquid.

[0309] Fig.16 A control device for a medical catheter pump system provided by an exemplary embodiment of the present application is shown. The medical catheter pump system includes a medical catheter pump and at least one flushing pipeline. The first flushing interface of the medical catheter pump is connected to the first flushing path driven by the flushing pump assembly through the valve inner passage between the second valve port and the first valve port of the first three-way valve. The second flushing interface of the medical catheter pump is connected to the second flushing path driven by the flushing pump assembly through the valve inner passage between the second valve port and the first valve port of the second three-way valve. The at least one flushing pipeline forms the first flushing path and the second flushing path. The device includes:

[0310] The control module 1601 is used to control the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid during the pre-filling stage;

[0311] During the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

[0312] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage. The control module 1601 is also used to control the rotation speed of the flushing pump and the circulation pump during the pre-filling stage, so that the difference between the flushing liquid flow rate of the first sub-passage and the flushing liquid flow rate of the second sub-passage is within a preset range, the first sub-passage includes the passage of the first flushing passage that is not shared with the second flushing passage, and the second sub-passage includes the passage of the second flushing passage that is not shared with the first flushing passage; the flushing liquid is filled into the first flushing passage and the second flushing passage through the flushing pump and the circulation pump.

[0313] In an optional embodiment, the control module 1601 is further used to control the pumping flow of the flushing pump to be a second flow, where the second flow is smaller than the first flow, and the first flow is the pumping flow of the flushing pump in the pre-filling stage.

[0314] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage. The control module 1601 is also used to control the rotation speed of the flushing pump based on the flushing liquid flow of the catheter of the medical catheter pump during the overall flushing stage; and control the rotation speed of the circulation pump based on the flushing liquid flow of the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; flush the circulating flushing loop and the catheter of the medical catheter pump through the flushing pump and the circulation pump.

[0315] In an optional embodiment, the control device also includes a flushing pump assembly, which includes a flushing pump and a circulation pump; the flushing pump is used to transport flushing liquid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage, and the circulating pump is used to control the flushing liquid to circulate and flush the inner cavity of the medical catheter pump during the overall flushing stage.

[0316] In an optional embodiment, the flushing pump is disposed in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is disposed in a passage of the second flushing passage that is not shared with the first flushing passage.

[0317] In summary, by arranging the first three-way valve and the second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve, and the medical catheter pump can be flushed through the additional flushing component to remove bubbles in the small gaps in the medical catheter pump.

[0318] Furthermore, the additional flushing assembly reduces the pumping speed pressure of the flushing pump assembly, so that the flushing pump assembly is no longer used to fill all flushing positions with flushing liquid, but is only used to fill part of the flushing positions with flushing liquid.

[0319] An embodiment of the present application also provides a control device, which is used to implement the flushing method of the medical catheter pump system provided by the above-mentioned method embodiments.

[0320] An embodiment of the present application further provides a computer-readable storage medium, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor to implement the flushing method of the medical catheter pump system provided by the above-mentioned method embodiments.

[0321] An embodiment of the present application further provides a chip, which includes a programmable logic circuit or a program, and a device equipped with the chip is used to implement the flushing method of the medical catheter pump system as described above.

[0322] An embodiment of the present application also provides a computer program product, which includes a computer program, and the computer program is stored in a computer-readable storage medium; the computer program is read and executed from the computer-readable storage medium by a processor of a computer device, so that the computer device executes to implement the flushing method of the medical catheter pump system provided by the above-mentioned method embodiments.

[0323] It should be noted that, unless otherwise clearly defined herein, all terms used in the claims are interpreted according to their ordinary meanings in the technical field. Unless otherwise clearly stated, all references to "an element, device, component, equipment, step, etc." will be openly interpreted as referring to at least one instance of an element, device, component, equipment, step, etc. Unless explicitly stated, the steps of any method disclosed herein do not have to be performed in the exact order disclosed.

[0324] It should be understood that the "plurality" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0325] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0326] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent switching, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A ventricular assist system, characterized in that: The ventricular assist system comprises a flushing pump assembly, a first three-way valve, a second three-way valve and a medical catheter pump; The first valve port of the first three-way valve is connected to the first flushing passage driven by the flushing pump assembly, and the second valve port of the first three-way valve is connected to the first flushing interface of the medical catheter pump; The first valve port of the second three-way valve is connected to the second flushing passage driven by the flushing pump assembly, and the second valve port of the second three-way valve is connected to the second flushing interface of the medical catheter pump.

2. A method for flushing a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing passage driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing passage driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing passage and the second flushing passage; The method comprises: In the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve; During the overall flushing stage, the flushing pump assembly flushes the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

3. The method according to claim 2, characterized in that In the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve, including: In the first pre-filling stage, the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing component connected to the third valve port of the second three-way valve or the third valve port of the first three-way valve; In the second priming stage, the first flushing passage and the second flushing passage are filled with the flushing fluid by the flushing pump assembly.

4. A method for flushing a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing passage driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing passage driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing passage and the second flushing passage; The method is performed by a control device corresponding to the flushing pump assembly, the control device is connected to the flushing pump assembly, and the method includes: In the pre-filling stage, the flushing pump assembly is controlled to fill the first flushing passage and the second flushing passage with flushing liquid; During the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

5. A consumable material for a medical catheter pump system, characterized in that: The consumables include a first three-way valve and a second three-way valve; The first valve port of the first three-way valve is used to connect to a first flushing passage driven by a flushing pump assembly, and the second valve port of the first three-way valve is used to connect to a first flushing interface of the medical catheter pump; The first valve port of the second three-way valve is used to connect to the second flushing passage driven by the flushing pump assembly, and the second valve port of the second three-way valve is used to connect to the second flushing interface of the medical catheter pump.

6. A control device for a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing passage driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing passage driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing passage and the second flushing passage; The device comprises: A control module, used for filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly during the priming stage, and filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing assembly connected to the third valve port of the second three-way valve; The control module is also used to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly during the overall flushing stage.

7. A control device for a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing passage driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing passage driven by the flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a second three-way valve, and the flushing pipeline forms the first flushing passage and the second flushing passage; The device comprises: A control module, used for controlling the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid during the pre-filling stage; The control module is also used to control the flushing pump assembly to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump during the overall flushing stage.

8. A control device, characterized in that: The control device is used to implement the flushing method for the medical catheter pump system according to any one of claims 2 to 4.

9. A computer storage medium, characterized in that At least one computer program is stored in the computer-readable storage medium, and the at least one computer program is loaded and executed by the processor to implement the flushing method of the medical catheter pump system according to any one of claims 2 to 4.

10. A chip, characterized in that: The chip includes a programmable logic circuit or a program, and a device equipped with the chip is used to implement the flushing method of the medical catheter pump system according to any one of claims 2 to 4.

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